120665001023 has 4 divisors (see below), whose sum is σ = 137902858320. Its totient is φ = 103427143728.

The previous prime is 120665001007. The next prime is 120665001043. The reversal of 120665001023 is 320100566021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120665001023 - 2⁴ = 120665001007 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 120665000983 and 120665001001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120665001043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8618928638 + ... + 8618928651.

It is an arithmetic number, because the mean of its divisors is an integer number (34475714580).

Almost surely, 2^120665001023 is an apocalyptic number.

120665001023 is a deficient number, since it is larger than the sum of its proper divisors (17237857297).

120665001023 is an equidigital number, since it uses as much as digits as its factorization.

120665001023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17237857296.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 120665001023 its reverse (320100566021), we get a palindrome (440765567044).

The spelling of 120665001023 in words is "one hundred twenty billion, six hundred sixty-five million, one thousand, twenty-three".